TWI739209B - Catheter handle and distal-end-deflection-operable catheter - Google Patents

Abstract

The object of the present invention is to provide a device that can lengthen the pulling amount of the operating wire sufficiently, and can make the "tubing part protruding from the lumen of the catheter shaft" without contact with the rotating plate and the operating wire In the state, insert the handle inside the handle body. The handle (100) of the present invention is provided with: a handle body (10) formed by a first handle member (11) and a second handle member (12), and a rotation operation portion (20), and the rotation operation portion includes: a rotation plate ( 25); and the first spacing member (21), which is installed with respect to the handle body so as not to rotate; and the second spacing member (22), which is installed with respect to the handle body so as not to rotate, the rotating plate has: the "operating wire (501) , 502) The path of the rotating operation part" is defined to form a winding guide rail (251) along the circumferential direction of the rotating plate, and guide passages (211) for pipe parts are respectively formed in the first spacer member and the second spacer member. , 221).

Description

Catheter handle and catheter with front-end deflectable operation

The present invention relates to a handle for a catheter and a catheter whose tip can be deflected.

A medical catheter is usually equipped with a handle on the proximal end (proximal end) side of the catheter shaft. As a handle for catheters, various types have been proposed corresponding to the types of catheters. For example, it is sometimes expected that the catheter handle can be operated to bend or extend the tip portion (distal end) of the catheter. In this way, as a mechanism for "manipulating the tip of the catheter on the handle side to deflect it", the following mechanism has been disclosed: the base end of the operating wire is connected to the "handle body mounted so as to rotate freely." "The rotating plate", by rotating the rotating plate, the direction of the leading end of the catheter is changed (deflection) (please refer to Patent Document 1 below).

In addition, the inventor of this case also proposed a handle for catheters that can hold "the lead wires of the electrodes protruding from the lumen of the catheter shaft, and long parts such as various tubes" without contacting the rotating plate. , Insert into the handle body (please refer to Patent Document 2 below).

The catheter handle described in Patent Document 2 is attached to the proximal side of the catheter shaft to form the handle of the electrode catheter. As shown in Figs. The second handle member 212 is formed; and the rotating operation portion has a rotating plate 220, the rotating plate 220 is arranged between the first handle member 211 and the second handle member 212, and is rotatably installed around the rotation axis (P) The base end of the "operation wire for deflecting the tip of the catheter shaft" is connected to the handle body 210; and the adjustment pin 230, the base 231 of which is fixed to the first handle member 211, and the shaft 232 is along the The rotating shaft (P) is arranged to penetrate the rotating plate 220 and has a male threaded portion 233 on its front end side; and an adjustment button 240 having a female threaded portion 243 that is locked with the male threaded portion 233 of the adjustment pin 230, and is installed so as to be opposed to each other Rotating on the second handle member 212; and O-ring 250, arranged between the first handle member 211 and the rotating plate 220 to correspond to the male threaded portion 233 of the adjustment pin 230 and the female threaded portion 243 of the adjustment button 240 The locking depth is used to change the operating force of the rotating plate 220; and the washer 255 is arranged between the second handle member 212 and the rotating plate 220. The aforementioned rotating operating part includes: the rotating plate 220, which combines the first rotating member 221 and the second 2 is formed by the rotating member 222; and the intermediate member 225 is arranged between the first rotating member 221 and the second rotating member 222 constituting the rotating plate 220, and is mounted so as not to rotate relative to the handle body 210, and is formed in the intermediate member 225 There are: guide grooves (the guide groove 2251 on the front end side and the guide groove 2252 on the rear end side) to promote the "pipe 270 (long part) that can be inserted into the handle body 210" along the handle body 210 The central axis (Z) in the longitudinal direction extends; and the through hole 235 has a shape conforming to the outer peripheral shape of the rotating plate 220, is integrated with the outer peripheral wall 2253 of the rotating operation part, and can be fixed at the shaft part 232 of the adjustment pin 230. A tube 270″ extending along the central axis (Z) passes through. In FIG. 8, the symbol 2200 is the catheter shaft, the symbol 2201 is the tip electrode, and the symbol 2202 is the ring electrode. In FIG. 9, the symbol 223 is the button of the rotating plate 220.

According to this catheter handle, the rotating plate 220 is rotated to pull the operating wire, thereby bending the tip portion of the catheter shaft, and the tip can be deflected. Then, by arranging the intermediate member 225 between the first rotating member 221 and the second rotating member 222 constituting the rotating plate 220, and using the intermediate member 225 as a spacer, it can be used between the first rotating member 221 and the second rotating member 222. A space for passing through the pipe 270 (long part) is ensured between the members 222.

However, in the catheter handle described in Patent Document 2, it is impossible to sufficiently ensure the "drawing amount of the operating wire caused by the rotation of the rotating plate 220", and therefore the tip portion of the catheter shaft 2200 cannot be sufficiently ensured. The problem of bending (deflection of the front end).

In addition, the applicant in this case proposes a catheter handle equipped with a mechanism for ensuring "the pulling amount of the operating wire by the rotation of the rotating plate" (please refer to Patent Document 3 below).

The catheter handle described in Patent Document 3 is a handle attached to the proximal end side of the catheter shaft. As shown in FIG. 11, it includes: a handle body 331; Freely rotating rotating plate 3320, rotating plate 3320 is provided with: a main body part D1, which is operated during a rotating operation; The guiding mechanism defines the path of the operating lead wire 341a and the operating lead wire 341b that "bend the distal end portion of the catheter shaft in response to the turning operation". In Figure 11, 3321a and 3321b, the buttons of the rotating plate 3320, 323a and 323b, are used to fix the base ends of the operating wire 341a and the operating wire 341b to the fixing device of the rotating plate 3320, and Ar is the rotating plate 3320 axis of rotation.

According to this catheter handle, the turning plate 3320 is rotated to the right by the operation knob 3321a, and inside the catheter shaft and the handle body 331, the operating wire 341a is pulled toward the proximal side, so that the tip of the catheter shaft faces the second 1 direction bending. At this time, the operation wire 341a located in the rotation operation portion 332 moves around the circumference of the rotating plate 3320 due to the guidance of the guide rail 3322, so that the pulling amount of the operation wire 341a can be sufficiently ensured.

In addition, the turning plate 3320 is rotated to the left by the operating button 3321b, and the operating wire 341b is pulled toward the proximal side inside the catheter shaft and the handle body 331, so that the tip of the catheter shaft is opposite to the first direction. The second direction of the side bends. At this time, the operation wire 341b located in the rotation operation portion 332 is guided by the guide rail 3322 and moves around the circumference of the rotating plate 3320, so that the pulling amount of the operation wire 341b can be sufficiently ensured.

In an electrode catheter equipped with "the catheter handle described in Patent Document 3", the lead wire of the electrode (tip electrode and/or ring electrode) attached to the catheter shaft passes through the lumen of the catheter shaft and extends from its proximal opening. Out, in the rotating operation portion 332, the handle body 331 is inserted into the inside of the handle body 331 through a slight gap between the handle body 331 and the rotating plate 3320.

However, in the catheter handle described in Patent Document 3, the parts protruding from the base end opening of the lumen of the catheter shaft, such as the flow tube for supplying fluid to the lumen of the catheter shaft, are substantially impossible to insert into the handle The inside of the body.

That is, because of the structure of the rotating plate 3320 having the guide mechanism (rail 3322) for the operating wire, it is impossible to ensure that the pipe part passes through the inside of the rotating plate 3320 like the handle for the catheter described in Patent Document 2. Therefore, in order to insert the "tube part protruding from the proximal opening of the lumen of the catheter shaft" into the handle body 331, the tube part has to pass through the aforementioned space between the handle body 331 and the rotating plate 3320. gap.

However, in the catheter handle described in Patent Document 3, the gap between the handle body 331 and the rotating plate 3320 cannot be secured for the passage of the pipe parts. Even if the "clearance through which the pipe parts can pass" can be ensured between the handle body 331 and the rotating plate 3320, the pipe parts protruding from the "lumen with an opening on the other side of the rotating plate 3320" pass through "located on the rotating plate" In the case of the aforementioned gap between one side of the 3320 and the handle body 331, it is considered that the tube part will form a kink due to its height difference, which will impair fluid flow or cause damage to the tube part. In addition, in such a case, it is considered that the pipe member extending from the other surface side of the rotating plate 3320 toward one surface side comes into contact with the rotating plate 3320 and the operation wires 341a and 341b and is damaged. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2005-230471 A [Patent Document 2] Japanese Patent No. 5535260 [Patent Document 3] Japanese Patent Application Publication No. 2018-153460

[Problem to be solved by invention]

The present invention is an invention developed in view of the above-mentioned circumstances, and its purpose is to provide a method that can sufficiently lengthen the "drawing amount of the operating wire generated by the rotating operation of the rotating plate" and which can be removed from the catheter shaft The tube part protruding from the base end of the tube is inserted into the catheter handle inside the handle body without contacting the rotating plate and the operating wire. [Means to Solve the Problem]

(1) The catheter handle of the present invention is a handle installed on the proximal side of the catheter shaft, and is characterized by: The handle body is composed of a first handle member and a second handle member that are divided into two along the length direction; and The rotation operation part is arranged between the first handle member and the second handle member, and has a circular plate-shaped rotating plate that is mounted to the handle body so as to be rotatable about a rotation axis perpendicular to the longitudinal direction, and is connected The base ends of the first operation wire and the second operation wire for deflecting the tip of the catheter shaft in the first direction and the second direction, respectively, The aforementioned turning operation unit has: The aforementioned rotating plate; and The first spacer member is arranged between the rotating plate and the first handle member, is mounted to the handle body so as not to rotate, and has an outer peripheral wall whose shape matches the outer peripheral shape of the rotating plate; and The second spacer member is arranged between the rotating plate and the second handle member, is mounted to the handle body so as not to rotate, and has an outer peripheral wall whose shape matches the outer peripheral shape of the rotating plate, The rotating plate has a guide mechanism to define the path of the first operating wire and the second operating wire in the rotating operating portion, and forming a detour along the circumferential direction of the rotating plate, The first spacer member and the second spacer member are respectively formed with a tube part protruding from the base end of the catheter shaft so as not to contact the rotating plate (to separate the tube part from both sides of the rotating plate). The guide passage inside the handle body. The aforementioned rotating plate does not matter even if it is in the shape of an incomplete circular plate. For example, it may be in the shape of an elliptical plate.

According to the catheter handle with this structure, since it constitutes the aforementioned rotating plate, it has a guide mechanism to define the path of the first operating wire and the second operating wire in the rotating operating part along the circumferential direction of the rotating plate By forming a detour, it is possible to sufficiently lengthen the "drawing amount of the first operating wire and the second operating wire generated by the rotating operation of the rotating plate".

In addition, with the first spacer member, the passage space of the tube parts can be secured between the rotating plate and the first handle member, and the second spacer member can secure the tube parts between the rotating plate and the second handle member. Passing through the space, by passing the "pipe part protruding from the base end of the catheter shaft" through the "guide path formed in the first spacer member or the second spacer member", it is possible to make the tube member not be formed with the rotating plate Insert into the handle body while touching. Then, since the contact between the pipe part and the rotating plate can be avoided, it is possible to reliably prevent the generation of abnormal noise during the operation of the rotating plate, and the damage (scratch) of the pipe part.

In addition, when the catheter shaft has a multi-lumen structure, a tube part protruding from the base end opening of the lumen formed on the "half circumference of the catheter shaft on the side of the first handle member" , Through the guide passage formed in the first spacer member, the tube part protruding from the base end opening of the lumen formed in the "half circumference of the catheter shaft on the side of the second handle member" passes through the tube part formed in the second spacer member The guide passage of the tube allows the pipe part to be inserted into the handle body without contacting the operating wire.

(2) In the catheter handle of the present invention, it is preferable to include: an adjustment pin having a base portion fixed to the first handle member, a shaft portion arranged to penetrate the rotation plate along the rotation axis of the rotation plate, and forming The male threaded part on the front end side of the aforementioned shaft part; and The adjusting button has a female threaded portion that is locked with the male threaded portion of the adjusting pin, and is mounted so as to be rotatable relative to the second handle member; and The elastic member is arranged between the handle body and the rotating plate to change the operating force of the rotating plate corresponding to the locking depth between the male threaded portion of the adjusting pin and the female threaded portion of the adjusting button , The shaft portion of the adjusting pin is formed with a through hole or a notch through which the pipe part can respectively pass.

According to the catheter handle with this structure, it is possible to make the "pipe part protruding from the base end of the catheter shaft", without avoiding the shaft portion of the adjustment pin, and extending along the length of the handle body. internal.

(3) In the catheter handle of the present invention, the guide passages respectively formed in the first spacer member and the second spacer member are preferably formed integrally with the outer peripheral wall and have a recess on the side of the rotating plate The guide ditch.

(4) In the catheter handle of the present invention, the aforementioned tube part is preferably a flow tube through which fluid flows.

(5) In the catheter handle of the present invention, it is preferable that the aforementioned tube part is a protective tube in which a wire or the like is enclosed.

(6) In the catheter handle of the present invention, it is preferable that the rotation operation portion has: a first connection portion to which the base end of the first operation wire can be connected, and a base to which the second operation wire can be connected. The second connection part of the end connection, The first connecting portion and the second connecting portion can form respective basic positions facing each other from the central axis of the handle body in the longitudinal direction, and slide to the base end side along the circumferential direction of the rotating plate.

In the conventional bidirectional catheter handle, when one of the operating wires is pulled to the proximal side by rotating the operating rotating plate, the other operating wire of the rotating operating part may loosen, which may cause slack. Kink and disconnection of wires for operation. In contrast, according to the catheter handle with the above structure, when one of the operation wires (the first operation wire or the second operation wire) is pulled to the proximal side by turning the operation rotating plate, the other operation wire The connection part (the second connection part or the first connection part) connected to the base end of the (2nd operation wire or the first operation wire), by sliding from its basic position in the circumferential direction of the rotating plate to the base end On the side, the other operation wire can be pulled in the direction of the base end, thereby preventing the slack of the other operation wire of the rotating operation part. As a result, it is possible to prevent kinking and disconnection due to looseness of the operating wire.

(7) The catheter with a deflectable tip of the present invention is characterized by comprising the catheter shaft described above and the handle for the catheter of the present invention, The tube part protruding from the "basal end opening of the lumen formed at the half-circumferential portion of the catheter shaft on the side of the first handle member" is inserted into the handle through the guide passage formed in the first spacer member The inside of the body, The tube part protruding from the "basal end opening of the lumen formed on the half-circumferential portion of the catheter shaft on the side of the second handle member" is inserted into the handle through the guide passage formed in the second spacer member The inside of the body.

According to this structure, the catheter whose front end can be deflected is protruding from the "lumen formed on the half-circumferential portion of the catheter shaft on the side of the first handle member, that is, the lumen with an opening on one side of the rotating plate" The tube part is inserted into the handle body through the guide passage formed in the "first spacer member arranged on one side of the rotating plate", and from the "tube on the half-circumferential part of the catheter shaft formed on the side of the second handle member" The cavity, that is, the tube part extending from the lumen with an opening on one side of the rotating plate, is inserted into the handle body through the guide passage formed in the "second spacer member arranged on the other side of the rotating plate", so it can be inserted into the handle body. The height difference between the lumen opening and the guide passage (the distance in the direction of the rotation axis of the rotating plate) is reduced, thereby preventing the kinking of the tube parts (the resulting damage to the fluidity or the damage of the tube parts). [Effects of the invention]

According to the catheter handle of the present invention, the "drawing amount of the operating wire generated by the rotating operation of the rotating plate" can be sufficiently lengthened, and the tube part protruding from the base end of the catheter shaft can be rotated Insert the inside of the handle body while the board is in contact with the operating wire.

The handle 100 of this embodiment shown in Figs. 1 to 7 is attached to the proximal side of the catheter shaft 200 of the multi-lumen structure and constitutes a handle of an electrode catheter (catheter whose tip can be deflected), and includes: a handle body 10, is formed by combining the first handle member 11 and the second handle member 12; and the rotation operation portion 20, which is arranged between the first handle member 11 and the second handle member 12, has a "relative to the handle body 10, which is mounted as A circular plate-shaped rotating plate 25" that can freely rotate about the rotating shaft (P), and can be used to deflect the tip of the catheter shaft 200 in the first and second directions, respectively, and the first operating wire 501 and The base ends of the second operating wire 502 are connected; and the adjustment pin 30 has a base 31 fixed to the first handle member 11, a shaft 32 arranged to penetrate the rotating plate 25 along the rotating shaft (P), and is formed on the shaft The male threaded portion 33 on the front end side of the portion 32; and the adjustment button 40, which has a female threaded portion 43 locked with the male threaded portion 33 of the adjustment pin 30, is mounted so as to be rotatable relative to the second handle member 12; and O-shaped The ring (elastic member) 55 is arranged between the second handle member 12 and the rotating plate 25, corresponding to the locking depth between the male thread portion 33 of the adjustment pin 30 and the female thread portion 43 of the adjustment button 40, so that the entire rotation The operating force of the plate 25 is changed; and the washer 50 is arranged between the first handle member 11 and the rotating plate 25, The turning operation portion 20 includes: the aforementioned turning plate 25; and a first spacer member 21, which is arranged between the turning plate 25 and the first handle member 11, and is mounted so as to be non-rotatable with respect to the handle body 10, and has an outer periphery with the turning plate 25 A circular outer peripheral wall 213 conforming to the shape; and the second spacer member 22, which is arranged between the rotating plate 25 and the second handle member 12, and is mounted to the handle body 10 so as not to rotate, and has the outer peripheral shape of the rotating plate 25 A circular outer peripheral wall 223 that matches; and the first connecting portion 261 for connecting the base end of the first operating wire 501; and the second connecting portion 262 for connecting the base end of the second operating wire 502, The rotating plate 25 has a path for the first operating lead 501 and the second operating lead 502 to the rotating operating part 20, and is defined to form a guide rail 251 (guide mechanism) that is meandering along the circumferential direction of the rotating plate 25. The first spacer member 21 is formed with "tube parts (circulation tube 701 and protection tube 702) protruding from the respective proximal openings of the first lumen 201 and the second lumen 202 of the catheter shaft 200". Without contacting the rotating plate 25, insert the guide groove 211 (guide path) of the handle body 10, and the second spacer member 22 is formed with: "from the third lumen 203 of the catheter shaft 200 and The tube parts (circulation tube 703 and protection tube 704) protruding from the respective proximal openings of the fourth lumen 204" are inserted into the guide groove 221 (guide Passage), the shaft portion 32 of the adjustment pin 30 is formed with a notch 34 through which each pipe component (the circulation pipes 701 and 703, and the protection pipes 702 and 704) can pass.

The catheter shown in FIG. 1 is an electrode catheter used for diagnosis or treatment of irregular pulses. The electrode catheter is composed of a catheter shaft 200 and a handle 100 of this embodiment attached to the proximal end of the catheter shaft 200. constitute. At the distal end of the catheter shaft 200, a distal electrode 301 and three ring electrodes 302 are attached.

The catheter shaft 200 has a multi-lumen structure. The outer diameter of the catheter shaft 200 is usually 0.6 to 3.0 mm, and the inner diameter is usually 0.5 to 2.5 mm. The tip electrode 301 and the ring electrode 302 are made of, for example, aluminum, copper, stainless steel, gold, platinum, and other metals with good conductivity. Although the outer diameters of the tip electrode 301 and the ring electrode 302 are not particularly limited, they are preferably about the same as the outer diameter of the catheter shaft 200.

As shown in FIG. 6, the catheter shaft 200 is formed with: "a half-circumferential portion formed on the catheter shaft 200 on the side of the first handle member 11 (the lower portion of the catheter shaft 200 shown in the figure) is formed. 1 lumen 201 and second lumen 202" and "the third tube formed on the half-circumferential part of the catheter shaft 200 on the side of the second handle member 12 (the upper part of the section of the catheter shaft 200 shown in the same figure) The 8 lumens 201 to 208 of the cavity 203 and the fourth lumen 204".

The first lumen 201 and the third lumen 203 are respectively extended with a flow tube 701 and a flow tube 703 through which the physiological saline for perfusion flows.

In the second lumen 202, a protective tube 702 for "enclosing the wires 402 connected to the ring electrodes 302" extends.

In the fourth lumen 204, a protective tube 704 "to enclose the lead wire 401 and the thermocouple 403 connected to the front electrode 301" is extended.

In the fifth lumen 205, a first operation guide wire 501 for deflecting the distal end of the catheter shaft 200 in the first direction extends. The first operation guidewire 501 extends toward the seventh lumen 207 at the tip portion of the catheter shaft 200. The tip of the first operating lead 501 is connected and fixed to the tip electrode 301 by solder filled in the internal space of the tip electrode 301. In addition, the base end of the first operating wire 501 is fixed to a first connecting portion 261 which will be described later to connect it to the rotating operation portion 20.

In the sixth lumen 206, a second operation guide wire 502 for deflecting the distal end of the catheter shaft 200 in a second direction opposite to the first direction is extended. The second operation guide wire 502 extends toward the eighth lumen 208 at the tip portion of the catheter shaft 200. The tip of the second operating wire 502 is connected and fixed to the tip electrode 301 by solder filled in the internal space of the tip electrode 301. In addition, the base end of the second operating wire 502 is fixed to a second connecting portion 262 described later that connects it to the rotation operating portion 20.

As shown in FIGS. 2, 3 and 7, the handle body 10 constituting the handle 100 of this embodiment is composed of a combination of a first handle member 11 and a second handle member 12 that are divided.

The rotation operation part 20 which comprises the handle 100 of this embodiment is equipped with the rotation plate 25 (movable member), the 1st spacer member 21, the 2nd spacer member 22, the 1st connection part 261, and the 2nd connection part 262.

The rotating plate 25 constituting the rotating operation part 20 is installed relative to the handle body 10 so as to be freely rotatable about the rotating shaft (P). The rotating plate 25 has a rail 251 (guide mechanism) that defines the path of the first operating lead wire 501 and the second operating lead 502 in the rotating operating portion 20, and forms a detour along the circumferential direction of the rotating plate 25. In addition, knobs 23 and 23 are provided on the rotating plate 25.

Once the rotating plate 25 is rotated in the direction of the arrow A1 shown in FIG. 1, the leading end of the catheter shaft 200 is bent in the direction of the arrow A by the pulling of the first operating wire 501, and the leading end is deflected. In addition, once the rotating plate 25 is rotated in the direction of arrow B1 as shown in FIG. 1, the leading end of the catheter shaft 200 will be bent in the direction of arrow B by the pulling of the second operating wire 502, and the leading end will be deflected. .

The first spacer 21 is arranged on one side of the rotating plate 25, and the second spacer 22 is arranged on the other side of the rotating plate 25. In this example, the first spacer member 21 and the second spacer member 22 are members of the same shape.

The first spacer member 21 constituting the rotation operation portion 20 is mounted between the rotation plate 25 and the first handle member 11 so as to be non-rotatable with respect to the handle body 10. Since the first spacer 21 is not able to rotate relative to the handle body 10, even if the rotating plate 25 is rotated relative to the handle body 10, the first spacer 21 will not rotate in conjunction therewith.

The first spacer 21 is formed by an outer peripheral wall 213 having a shape corresponding to the outer peripheral shape of the rotating plate 25, and a guide groove 211 extending in the longitudinal direction of the handle body 10 as a single body.

The outer peripheral wall 213 of the first partition member 21 has a shape conforming to the outer peripheral shape of the rotating plate 25, that is, having a substantially circular ring shape (partial ring shape) having an outer diameter substantially the same as that of the rotating plate 25.

The guide groove 211 of the first spacer member 21 is used to make the flow tube 701 protruding from the proximal opening of the first lumen 201 of the catheter shaft 200 and protruding from the proximal opening of the second lumen 202 The protection tube 702 is inserted into the guide passage inside the handle body 10. The guiding groove 211 has a recess (bottom surface) on the side where the rotating plate 25 is located. However, the bottom surface of the guide groove 211 is separated from one surface of the rotating plate 25 in the direction of the rotation axis (P), and the flow pipe 701 and the protection pipe 702 that have passed through the guide groove 211 will not contact the rotating plate 25.

With the first spacer member 21, a space for the circulation tube 701 and the protection tube 702 to pass through can be secured between the rotating plate 25 and the first handle member 11, and the circulation tube 701 and the protection tube 702 pass through the first The guide groove 211 of the spacer member 21 allows these pipe parts to be inserted into the handle body 10 without contacting the rotating plate 25 and the operating wires (the first operating wire 501 and the second operating wire 502) Internally, by this, it is possible to reliably prevent the generation of abnormal noise during the operation of the rotating plate 25 and the damage (scratch) of the circulation pipe 701 and the protection pipe 702.

The second spacer member 22 constituting the rotation operation portion 20 is installed between the rotation plate 25 and the second handle member 12 so as to be non-rotatable with respect to the handle body 10. Since the second spacer member 22 cannot rotate with respect to the handle body 10, even if the rotating plate 25 is rotated with respect to the handle body 10, the second spacer member 22 will not rotate in conjunction therewith.

The second spacer member 22 is integrally formed by an outer peripheral wall 223 having a shape corresponding to the outer peripheral shape of the rotating plate 25 and a guide groove 221 extending in the longitudinal direction of the handle body 10.

The outer peripheral wall 223 of the second partition member 22 has a shape conforming to the outer peripheral shape of the rotating plate 25, that is, having a substantially circular ring shape (partial ring shape) with an outer diameter substantially the same as that of the rotating plate 25.

The guide groove 221 of the second spacer member 22 is used to make the flow tube 703 protruding from the proximal opening of the third lumen 203 of the catheter shaft 200 and protruding from the proximal opening of the fourth lumen 204 The protection tube 704 is inserted into the guide passage inside the handle body 10. The guiding groove 221 has a recess (bottom surface) on the side where the rotating plate 25 is located. However, the bottom surface of the guide groove 221 is separated from one surface of the rotating plate 25 in the direction of the rotation axis (P), and the flow pipe 703 and the protection tube 704 that have passed through the guide groove 221 will not contact the rotating plate 25.

With the second spacer member 22, a space for the circulation tube 703 and the protective tube 704 to pass through can be secured between the rotating plate 25 and the second handle member 12, and the circulation tube 703 and the protective tube 704 pass through the second The guide groove 221 of the spacer member 22 allows these pipe parts to be inserted into the handle body 10 without contacting the rotating plate 25 and the operating wires (the first operating wire 501 and the second operating wire 502) Internally, by this, it is possible to reliably prevent the generation of abnormal noise during the operation of the rotating plate 25 and the damage (scratches) of the circulation pipe 703 and the protection pipe 704.

The base end of the first operation wire 501 is fixed to the first connection portion 261 constituting the rotation operation portion 20. The first connecting portion 261 can be moved from its basic position (the position of the first connecting portion 261 when the tip portion of the catheter shaft is not bent. The position of the first connecting portion 261 shown in FIGS. 4 and 5) The "travel path 271 formed along the circumferential direction of the rotating plate 25" slides toward the base end side.

According to this structure, when the rotating plate 25 is rotated to pull the second operating wire 502, the first connecting portion 261 to which the base end of the first operating wire 501 is connected is directed toward the base end along the circumferential direction of the rotating plate 25 By sliding in the direction, the first operation wire 501 can be pulled in the proximal direction, thereby preventing the first operation wire 501 of the rotation operation portion 20 from being slack.

The base end of the second operation wire 502 is fixed to the second connection portion 262 constituting the rotation operation portion 20. The second connecting portion 262 can be moved from its basic position (the position of the second connecting portion 262 when the tip portion of the catheter shaft is not bent. The position of the second connecting portion 262 shown in FIGS. 4 and 5) The "traveling path 272 formed along the circumferential direction of the rotating plate 25" slides toward the base end side.

According to this structure, when the rotating plate 25 is rotated to pull the first operating wire 501, the second connecting portion 262 to which the base end of the second operating wire 502 is connected is directed toward the base end along the circumferential direction of the rotating plate 25 By sliding in the direction, the second operation wire 502 can be pulled in the proximal direction, and thereby, the second operation wire 502 of the rotation operation portion 20 can be prevented from being slack.

As shown in FIGS. 2, 3 and 7, the adjustment pin 30 constituting the handle 100 of this embodiment is integrally formed by a base portion 31, a shaft portion 32, and a male screw portion 33 (tip portion). The adjustment pin 30 has a base 31 fixed to the first handle member 11 and is arranged to penetrate the rotation plate 25 along the rotation axis (P).

In addition, the adjustment button 40 constituting the handle 100 of the present embodiment has the button portion 41, the circular plate portion 42, and the female thread portion 43 integrally formed. The female threaded portion 43 of the adjusting button 40 can be locked with the male threaded portion 33 of the adjusting pin 30, corresponding to the locking depth (locked in) between the female threaded portion 43 of the adjusting button 40 and the male threaded portion 33 of the adjusting pin 30 Depth), the distance between the first handle member 11 and the second handle member 12 is changed.

By the change of this distance, the pressure on the "O-ring 55 arranged between the second spacer 22 and the rotating plate 25" is changed, and the locking force of the O-ring 55 on the rotating plate 25 (rotating plate The operating force) to form a change. Here, once the locking force of the O-ring 55 increases, the operation of the rotating plate 25 will become heavier, and once the locking force decreases, the operation of the rotating plate 25 will become lighter.

Here, the O-ring 55 is made of a material with good elasticity, such as silicone rubber, nitrile rubber, fluororubber, and the like. In addition, the gasket 50 arranged between the first spacer 21 and the rotating plate 25 is preferably made of a material with good sliding properties, such as fluororesin.

The shaft portion 32 of the adjustment pin 30 is formed with a notch 34 through which each pipe part (the circulation pipes 701 and 703, and the protection pipes 702 and 704) can pass. Thereby, these pipe parts do not need to avoid the shaft portion 32 of the adjusting pin 30 to form a winding, and can extend inside the handle body 10 along the length direction of the handle body 10.

According to the handle 100 of this embodiment, it is possible to make the tube parts (circulation) protruding from the proximal openings of the first lumen 201, the second lumen 202, the third lumen 203, and the fourth lumen 204 of the catheter shaft 200, respectively. The tube 701, the protection tube 702, the circulation tube 703, and the protection tube 704) extend along the length direction of the handle body 10.

In addition, the rotating plate 25 constituting the handle 100 has a circuit for defining "the path of the first operating lead 501 and the second operating lead 502 in the rotating operating portion 20" along the circumferential direction of the rotating operating plate 25. The guide rail 251 (guide mechanism) can therefore sufficiently increase the "drawing amount of the first operating lead wire 501 and the second operating lead wire 502 derived from the rotating operation of the rotating plate 25".

In addition, since the flow pipe 701 and the protection pipe 702 pass through the guide groove 211 formed in the first partition member 21, these pipe parts can be inserted into the handle body 10 without contacting the rotating plate 25, and the flow pipe 703 And the protection tube 704 can be inserted into the handle body 10 without contacting the rotating plate 25 with the guide groove 221 formed in the second partition member 22. Then, since the contact between the pipe parts and the rotating plate 25 can be avoided, it is possible to reliably prevent the generation of abnormal noise during the operation of the rotating plate 25, and damage (scratches) of the pipe parts.

Not only that, the tube parts (the circulation tube 701 and the protective tube 702) respectively protruding from the proximal openings of the lumens 201 and 202 of the catheter shaft 200 pass through the guide groove 211 of the first spacer member 21, and respectively extend from the catheter shaft 200 The tube parts (the circulation tube 703 and the protection tube 704) projecting from the base end openings of the lumens 203 and 204 pass through the guide groove 221 of the second spacer member 22, whereby these tube parts do not contact the operating guide wire (first The operating lead wire 501 and the second operating lead wire 502) are inserted into the handle body.

Although the embodiments of the present invention have been described above, the handle for catheters of the present invention is not limited to these embodiments, and various modifications are possible. For example, the pipe parts that respectively pass through the guide groove 211 and the guide groove 221 are not limited to two, and may be one or more than three. In addition, in the above-mentioned embodiment, although an example in which the catheter handle of the present invention is applied to an electrode catheter is described, the catheter handle of the present invention can also be applied to guide catheters (guide catheters/guiding catheters) and blood vessels. Photography catheter (angiographic catheter), sheath catheter (sheath introducer), microcatheter (Microcatheter), etc.

100: handle 10: Handle body 11: The first handle member 12: The second handle member 20: Rotation operation part 21: The first spacer member 211: Guidance Ditch (Guide Path) 213: Peripheral Wall 22: The second spacer member 221: Guidance Ditch (Guide Path) 223: Peripheral Wall 23: button (knob) 25: Rotating plate 251: Guide rail (guide mechanism) 261: first connection part 262: 2nd connection part 30: adjustment pin 31: Base 32: Shaft 33: Male thread 34: gap 40: adjustment button 41: Button 42: Disc section 43: Female thread 50: Washer 55: O-ring 200: Catheter shaft 201: Lumen 1 (lumen) 202: 2nd lumen 203: 3rd lumen 204: 4th lumen 205: 5th lumen 206: 6th lumen 207: 7th lumen 208: 8th lumen 301: Front electrode 302: Ring electrode 401: Lead wire of front electrode 402: Wire of ring electrode 403: thermocouple 501: The first operating wire (operating wire) 502: 2nd operation wire 701, 703: Circulation tube (tube parts) 702,704: Protection tube (tube parts)

[Fig. 1]: A plan view showing an electrode catheter equipped with a handle according to one embodiment of the present invention. [Figure 2]: A cross-sectional view showing the important parts of the handle shown in Figure 1 (II-II cross-sectional view). [Fig. 3]: A longitudinal cross-sectional view showing important parts of the handle shown in Fig. 1 (III-III cross-sectional view). [Fig. 4]: A cross-sectional view showing important parts of the handle shown in Fig. 1 (a cross-sectional view of IV-IV in Fig. 2). [Fig. 5]: A cross-sectional view showing important parts of the handle shown in Fig. 1 (V-V cross-sectional view in Fig. 2). [Fig. 6]: A cross-sectional view showing the electrode catheter shown in Fig. 1 (VI-VI cross-sectional view). [Fig. 7]: A perspective view showing the components of the handle shown in Fig. 1. [Figure 8]: A top view showing a catheter with a traditional handle. [Fig. 9]: A cross-sectional view showing important parts of the handle shown in Fig. 8 (IX-IX cross-sectional view). [Fig. 10]: A cross-sectional view showing the important parts of the handle shown in Fig. 8 (X-X cross-sectional view). [Figure 11]: A top view schematically showing the inside of a traditional handle.

P: Rotation axis

10: Handle body

11: The first handle member

12: The second handle member

20: Rotation operation part

21: The first spacer member

22: The second spacer member

23: Button

25: Rotating plate

30: adjustment pin

31: Base

32: Shaft

33: Male thread

34: gap

40: adjustment button

41: Button

42: Disc section

50: Washer

55: O-ring

211: Guidance Ditch (Guide Path)

213: Peripheral Wall

221: Guidance Ditch (Guide Path)

223: Peripheral Wall

251: Guide rail (guide mechanism)

261: first connection part

262: 2nd connection part

Claims (7)

A handle for a catheter is a handle installed on the base end side of a catheter shaft, and is characterized in that it has: a handle body composed of a first handle member and a second handle member that are divided into two along the length direction; And the turning operation part, which is arranged between the first handle member and the second handle member, has a disk-shaped turning plate that is mounted to the handle body so as to be rotatable about a turning axis perpendicular to the longitudinal direction, and Connected to the respective base ends of the first operating wire and the second operating wire for deflecting the distal end of the catheter shaft in the first direction and the second direction, respectively, the rotation operation portion includes: the rotation plate; and a first The spacer member is arranged between the rotating plate and the first handle member, and is mounted so as to be non-rotatable with respect to the handle body, and has an outer peripheral wall whose shape matches the outer peripheral shape of the rotating plate; and the second spacer member is arranged in The rotation plate and the second handle member are mounted so as to be non-rotatable relative to the handle body and have an outer peripheral wall whose shape matches the outer peripheral shape of the rotation plate. The rotation plate has a guide mechanism to define the first 1 The operating wire and the second operating wire in the path of the rotating operation part are tortuous along the circumferential direction of the rotating plate, and the first spacer member and the second spacer member are respectively formed with: The tube part protruding from the base end of the shaft will not touch the aforementioned rotation The movable plate is inserted into the guide passage inside the handle body. The catheter handle according to claim 1, including: an adjustment pin having a base fixed to the first handle member; The male threaded part on the front end side of the part; and the adjustment button, which has a female threaded part that is locked with the male threaded part of the adjustment pin, and is mounted so as to be rotatable with respect to the second handle member; and an elastic member is arranged on the handle Between the main body and the rotating plate, the operating force of the rotating plate is changed by the locking depth between the male threaded portion of the adjusting pin and the female threaded portion of the adjusting button. The shaft portion is formed with a through hole or a notch through which each of the aforementioned pipe parts can pass. The catheter handle according to claim 1 or claim 2, wherein the guide passages respectively formed in the first partition member and the second partition member are formed integrally with the outer peripheral wall and are located on the side of the rotating plate There is a recessed guide groove. The handle for a catheter as described in claim 1 or claim 2, wherein the tube part is a flow tube through which fluid flows. The handle for a catheter as described in claim 1 or claim 2, wherein the aforementioned tube part is a protective tube for encapsulating wires. The handle for a catheter as described in claim 1 or claim 2, wherein the rotation operation part has: a wire for the first operation The first connecting portion connected to the base end of the second connecting portion, the second connecting portion connecting the base end of the second operating wire, the first connecting portion and the second connecting portion can be separated from the longitudinal direction of the handle body The central axis of, forms each basic position facing each other, and slides to the base end side along the circumferential direction of the aforementioned rotating plate. A catheter whose tip can be deflected, characterized in that it is provided with the catheter shaft and the catheter handle described in any one of claims 1 to 6, from the catheter formed on the side of the first handle member The tube part protruding from the base end opening of the lumen of the half-circle portion of the shaft is inserted into the inside of the handle body through the guide passage formed in the first spacer member, from a side formed on the second handle member. The tube part protruding from the base end opening of the lumen of the half circumference of the catheter shaft is inserted into the handle body through the guide passage formed in the second spacer member.

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